Type 2 Diabetes: Symptoms, Diagnosis, and Treatment — What to Do After Your Diagnosis
About the author: Dr. Casey Dean is a board-certified family medicine physician (ABFM) who manages type 2 diabetes, high blood pressure, and high cholesterol for patients across Texas through primary care and telehealth.
Type 2 diabetes is a chronic condition in which your body resists insulin and can't make enough extra insulin to keep blood sugar in a healthy range. It is diagnosed with blood tests, most often an A1C of 6.5% or higher or a fasting glucose of 126 mg/dL or higher. If you've just been diagnosed, your next steps are to confirm the result, set an individualized A1C goal, check your heart and kidney health, and choose a treatment plan that fits your overall health.
According to the CDC, about 40.1 million Americans have diabetes, and more than 1 in 4 adults with diabetes don't know they have it. In Texas, more than 2.9 million adults (12.7%) have been diagnosed, according to the Texas Diabetes Council. The good news: type 2 diabetes is very treatable, and treatment in 2026 aims to protect your heart, kidneys, and liver, not just lower your blood sugar.
Quick Summary: Key Facts at a Glance
Classic Symptoms: Increased thirst, frequent urination, blurred vision, fatigue, slow-healing sores, and frequent infections. Many people have no symptoms when they are diagnosed.
Diagnosis: Type 2 diabetes is diagnosed with an A1C (your average blood sugar over about 3 months) of 6.5% or higher, or a fasting glucose of 126 mg/dL or higher. Unless blood sugar is clearly very high, the result must be confirmed.
Usual Goal: The 2026 American Diabetes Association (ADA) Standards of Care say an A1C below 7% is appropriate for many nonpregnant adults. Goals are individualized.
Organ-Protecting Treatment: If you have heart disease, high cardiovascular risk, or kidney disease, the ADA recommends a GLP-1 medication and/or SGLT2 inhibitor with proven benefit, regardless of A1C. For heart failure, it recommends an SGLT2 inhibitor.
Telehealth Role: A telehealth physician can review your labs, start or adjust many diabetes medications, and coordinate in-person eye, foot, and lab screening.
Emergency Red Flags: High blood sugar with vomiting, confusion, fruity-smelling breath, rapid breathing, or severe weakness needs emergency care.
Key takeaway: Type 2 diabetes usually can't be cured, but with early, individualized treatment many people reach their A1C goal and lower their risk of heart, kidney, eye, and nerve complications.
Emergency warning: High blood sugar alone is not usually an emergency. But high blood sugar plus any of the following can signal a hyperglycemic crisis (diabetic ketoacidosis or hyperosmolar hyperglycemic state): vomiting, confusion or unusual drowsiness, trouble breathing, or fruity-smelling breath. Call 911 or go to the nearest emergency room.
What Should You Do After a Type 2 Diabetes Diagnosis?
After a type 2 diabetes diagnosis, most people should work through five steps with their physician:
1. Confirm the diagnosis. Unless blood sugar is clearly very high with symptoms, a second abnormal result is needed.
2. Check your heart, kidney, and liver health. This usually means a urine albumin test, kidney function, cholesterol, blood pressure, and liver enzymes.
3. Set your A1C goal. Below 7% fits many nonpregnant adults, adjusted for your age, health, and risk of low blood sugar.
4. Choose a treatment plan. Combine lifestyle change with medication chosen for your other conditions, not just your A1C.
5. Schedule follow-up. Plan A1C checks every 3–6 months, a yearly kidney test (uACR and eGFR), and a yearly foot exam. You'll also need a retinal eye exam at diagnosis and then yearly, or every 1–2 years if exams are normal and your blood sugar is at goal. These checks catch heart, kidney, eye, and nerve damage early.
What Are the First Signs and Symptoms of Type 2 Diabetes?
The most common symptoms of type 2 diabetes are increased thirst, frequent urination, blurred vision, and fatigue. Other signs include:
Tingling or numbness in the hands or feet
Slow-healing cuts or sores
Recurring skin, gum, bladder, or vaginal yeast infections
Unexplained weight loss when blood sugar is very high
Type 2 diabetes often develops slowly, so many cases are found on routine blood work before symptoms appear.
These symptoms are clues, not proof. Thirst, fatigue, and frequent urination can also come from thyroid disease, kidney problems, medications such as diuretics, or an overactive bladder. Only blood testing can confirm diabetes.
How Do Doctors Diagnose Type 2 Diabetes?
Doctors diagnose type 2 diabetes when a blood test meets the ADA thresholds shown below. Unless blood sugar is clearly very high with symptoms, the diagnosis must be confirmed with a repeat test or a second, different test from the same blood draw. A1C should be run by a lab using a nationally standardized (NGSP-certified) method. It can be misleading during pregnancy, with sickle cell trait or other hemoglobin variants, after recent blood loss or transfusion, and on dialysis.
Blood sugar test results: normal vs. prediabetes vs. diabetes (ADA Standards of Care)
| Test | Normal | Prediabetes | Diabetes |
|---|---|---|---|
| A1C | Below 5.7% | 5.7%–6.4% | 6.5% or higher |
| Fasting plasma glucose | Below 100 mg/dL | 100–125 mg/dL | 126 mg/dL or higher |
| 2-hour oral glucose tolerance test | Below 140 mg/dL | 140–199 mg/dL | 200 mg/dL or higher |
| Random glucose with classic symptoms | — | — | 200 mg/dL or higher |
If your numbers fall in the prediabetes range, that is a window to act. Weight loss, activity, and sometimes metformin can lower your chance of progressing to type 2 diabetes.
What Tests Do You Need After a Type 2 Diabetes Diagnosis?
Most people need a urine albumin-to-creatinine ratio (uACR, a urine protein test), eGFR (a blood test of kidney filtering), a cholesterol panel, liver enzymes, a blood pressure check, an eye exam, and a foot exam after a type 2 diabetes diagnosis. Some people need extra testing. If you are lean, younger, losing weight quickly, or not responding to pills, antibody tests can check for a slow-onset form of type 1 diabetes (LADA). If you take metformin long term, a periodic vitamin B12 level is reasonable. See our article on vitamin B12 deficiency from metformin.
What Should Your A1C Be If You Have Type 2 Diabetes?
For many nonpregnant adults with type 2 diabetes, the A1C goal is below 7%, according to the 2026 ADA Standards of Care. A lower goal such as below 6.5% may fit healthy people at low risk of hypoglycemia (low blood sugar). Less strict goals may fit older adults with frailty, memory problems, or serious illness. If you use a continuous glucose monitor (CGM), the ADA suggests aiming for more than 70% "time in range," meaning the share of the day your glucose stays in the target zone. Because A1C reflects roughly the past 3 months, the full effect of a treatment change is usually judged about 3 months later.
What this means in plain English: Set your A1C goal with your doctor, not by copying someone else's. The right number balances preventing complications against the risk of dangerous lows.
What Is the Best Treatment for Type 2 Diabetes?
The best type 2 diabetes treatment combines lifestyle change with medication chosen for your overall health, not just your blood sugar. The 2026 ADA Standards of Care recommend shared decision-making, weighing each medicine's effects on your heart, kidneys, and weight against side effects, cost, and your preferences.
Lifestyle: The Foundation
Lifestyle changes lower blood sugar and help every medication work better. Aim for about 150 minutes a week of moderate activity plus strength training twice a week. Eat more vegetables, legumes, and whole foods, and fewer sugary drinks and refined carbohydrates. If you have overweight, losing 5% or more of your body weight often improves blood sugar. Lifestyle change works alongside medication when it's needed, not as a substitute.
Which Type 2 Diabetes Medication Is Best for You?
The best type 2 diabetes medication depends on your other conditions, especially heart, kidney, or liver disease. Metformin is still a common, inexpensive first choice. According to the ADA, compared with sulfonylureas (older pills that push the pancreas to release insulin), metformin doesn't cause weight gain or low blood sugar on its own and has been linked to fewer deaths from heart disease. The 2026 Standards also say combination therapy can be considered from the start to reach goals sooner.
Two newer classes matter most. GLP-1 medications are weekly injections or daily pills that lower blood sugar and appetite. Tirzepatide is a related dual GIP/GLP-1 medication. SGLT2 inhibitors are pills that help your kidneys remove extra sugar through urine.
Which medications the 2026 ADA Standards prioritize, by situation
| Your situation | Medications commonly prioritized |
|---|---|
| Newly diagnosed, no heart or kidney disease | Metformin and/or GLP-1-based therapy, chosen by A1C, weight goals, cost, and preference. Combination therapy may be considered early. |
| Heart disease or high cardiovascular risk | A GLP-1 medication and/or SGLT2 inhibitor with proven heart benefit, regardless of A1C |
| Heart failure | An SGLT2 inhibitor to prevent heart-failure hospitalizations, regardless of A1C. With obesity and symptomatic HFpEF (heart failure with preserved ejection fraction), also tirzepatide or a GLP-1 medication. |
| Chronic kidney disease (eGFR 20–60 and/or protein in the urine) | An SGLT2 inhibitor or GLP-1 medication with proven kidney benefit, regardless of A1C |
| Fatty liver disease (MASLD) with overweight or obesity | Consider a GLP-1 medication with demonstrated liver benefit or tirzepatide with potential liver benefit |
| A1C above 10%, glucose 300 mg/dL or higher, or symptoms of very high sugar | Insulin should be considered. Without severe hyperglycemia or a crisis, GLP-1-based therapy is preferred over insulin. |
Learn more in our guides to chronic kidney disease and kidney-protective medications and fatty liver disease (MASLD) treatment.
What this means in plain English: If you have diabetes plus heart, kidney, or liver disease, your medication should protect those organs too, even if your A1C already looks good.
Clinical pearl: Think of your A1C as the scoreboard, and your heart, kidneys, and eyes as the game. Two people with the same A1C can need very different medications. For example, someone with an A1C of 7.2% and chronic kidney disease may benefit most from a kidney-protective SGLT2 inhibitor or GLP-1 medication. Someone with the same A1C and no heart or kidney disease has a wider range of reasonable options.
What Are the Side Effects of Diabetes Medications?
Every diabetes medication has trade-offs, so review them with a clinician before you start:
Metformin: Diarrhea or stomach upset (often eased by the extended-release form) and lower B12 over time. Per the ADA, the dose is reduced when eGFR falls below 45 and stopped below 30.
GLP-1 medications and tirzepatide: Nausea, vomiting, or constipation, especially while the dose is increased. They are also linked to gallbladder problems.
SGLT2 inhibitors: Genital yeast infections and, rarely, ketoacidosis.
Sulfonylureas and insulin: Low blood sugar and weight gain.
Do You Need a Continuous Glucose Monitor?
Many people with type 2 diabetes can benefit from a CGM, a small sensor worn on the arm or abdomen that reads glucose around the clock. The 2026 ADA Standards recommend CGM for people using insulin, for those on other medications that can cause lows, and for anyone whose care CGM helps. If your medications carry little risk of lows, occasional fingerstick checks may be enough.
Can Type 2 Diabetes Be Reversed or Put Into Remission?
Type 2 diabetes can sometimes go into remission, but it is not considered cured. A 2021 international consensus report published in Diabetes Care defines remission as an A1C below 6.5% for at least 3 months after stopping glucose-lowering medication.
In the DiRECT trial, published in The Lancet, 46% of adults in a structured weight-management program reached remission at 12 months, compared with 4% with usual care, among adults diagnosed within 6 years and not on insulin. Among those who lost 15 kg (33 lb) or more, 86% reached remission. Remission is most likely early in the disease, and blood sugar can rise again, so yearly monitoring continues.
How Does Diabetes Affect the Rest of Your Body?
High blood sugar damages blood vessels over time, raising your risk of heart attack, stroke, kidney disease, vision loss (retinopathy), nerve damage (neuropathy), and erectile dysfunction. Along with the yearly checks listed above, the ADA recommends controlling blood pressure and cholesterol. That includes a statin (cholesterol-lowering medicine) for most adults ages 40–75 with diabetes.
Can You Manage Diabetes During Pregnancy?
Diabetes can be managed during pregnancy, usually with insulin as the preferred medication, according to the ADA and ACOG. GLP-1 medications and SGLT2 inhibitors are generally stopped before a planned pregnancy. For example, the semaglutide label advises stopping at least 2 months beforehand. ACE inhibitors and ARBs (blood pressure medicines) should be stopped before conception, and statins usually are as well.
If you could become pregnant, plan with your clinician. Good blood-sugar control before conception lowers the risk of birth defects.
When Should You See a Doctor for Type 2 Diabetes?
You should see a doctor if you have symptoms of high blood sugar or diabetes that isn't at goal on your current plan. If a lab report shows an A1C of 5.7% or higher, schedule a visit too. That result is in the prediabetes or diabetes range and may need repeat testing. A physician can confirm the diagnosis, check for related conditions, and build a plan that protects your heart and kidneys.
Type 2 Diabetes Telehealth Care Across Texas
Trinity Family Medicine is a Texas telehealth primary care practice that manages type 2 diabetes, high blood pressure, and high cholesterol. You see the same board-certified family physician every visit for lab review, A1C monitoring, and medication management, including GLP-1 medications when appropriate. Blood draws, eye exams, and foot exams are coordinated in person.
Book a chronic care visit from $49.99 at trinitymedtx.com or call 817-932-4022.
Frequently Asked Questions About Type 2 Diabetes
What is the first-line treatment for type 2 diabetes?
Metformin plus lifestyle change is usually first-line, but not always. The 2026 ADA Standards of Care recommend choosing medication based on your whole health. If you have heart disease, high cardiovascular risk, or chronic kidney disease, the ADA recommends a GLP-1 medication and/or SGLT2 inhibitor with proven benefit, regardless of A1C. Combination therapy can also be considered from the start.
What A1C level means you need medication?
There is no single cutoff for starting medication. Many people start at diagnosis (A1C 6.5% or higher), especially if their A1C is well above 7% or they have heart or kidney disease. Some people with mildly elevated A1C first try lifestyle changes with close follow-up. An A1C above 10% often calls for more intensive therapy, sometimes including insulin.
Can type 2 diabetes be reversed?
Sometimes, but remission is not a cure. Experts define remission as an A1C below 6.5% for at least 3 months without diabetes medication. In the DiRECT trial, 46% of people in a structured weight-loss program reached remission at one year, versus 4% with usual care. Remission is most likely early in the disease and after substantial weight loss.
Is Ozempic or Mounjaro approved for type 2 diabetes?
Yes. The FDA has approved Ozempic (semaglutide) and Mounjaro (tirzepatide) to improve blood sugar in adults with type 2 diabetes, alongside diet and exercise. Each also has an FDA-approved heart indication, but for different groups. Ozempic is approved for adults with type 2 diabetes and established heart disease, and Mounjaro for adults with type 2 diabetes at high cardiovascular risk.
Is a normal fasting blood sugar enough to rule out diabetes?
No, that's a myth. Fasting glucose can be normal while your A1C or after-meal glucose is high, especially early in the disease. The ADA accepts A1C, fasting glucose, or a glucose tolerance test for diagnosis. If you have risk factors such as overweight, family history, or prior gestational diabetes, ask whether an A1C test is right for you.
What kind of doctor should you see for type 2 diabetes?
Usually a primary care physician. Family and internal medicine doctors diagnose and manage most type 2 diabetes, including A1C monitoring, medication, and complication screening. An endocrinologist can help when blood sugar stays hard to control, the type of diabetes is unclear, or treatment is complex, such as an intensive insulin regimen.
Can a telehealth doctor prescribe diabetes medication in Texas?
Yes, when clinically appropriate. A Texas-licensed physician can evaluate your diabetes by video, review labs and glucose readings, and prescribe or adjust many oral and injectable diabetes medications. Blood draws, foot exams, and eye exams still happen in person. Vomiting, confusion, or very high blood sugar needs emergency care, not a video visit.
The Bottom Line
Type 2 diabetes is common, often silent, and very manageable. Under the 2026 ADA Standards of Care, treatment means an individualized A1C goal, lifestyle change, and medications chosen to protect your heart, kidneys, and liver as well as lower blood sugar. Early diagnosis and consistent follow-up with the same physician can greatly improve your chances of preventing diabetes complications.
References
American Diabetes Association Professional Practice Committee. "9. Pharmacologic Approaches to Glycemic Treatment: Standards of Care in Diabetes—2026." Diabetes Care, 2026;49(Suppl 1). doi:10.2337/dc26-S009 pmc.ncbi.nlm.nih.gov/articles/PMC12690185/
American Diabetes Association Professional Practice Committee. "6. Glycemic Goals, Hypoglycemia, and Hyperglycemic Crises: Standards of Care in Diabetes—2026." Diabetes Care, 2026;49(Suppl 1). doi:10.2337/dc26-S006 pmc.ncbi.nlm.nih.gov/articles/PMC12690178/
American Diabetes Association Professional Practice Committee. "7. Diabetes Technology: Standards of Care in Diabetes—2026." Diabetes Care, 2026;49(Suppl 1) pmc.ncbi.nlm.nih.gov/articles/PMC12690173/
American Diabetes Association Professional Practice Committee. "15. Management of Diabetes in Pregnancy: Standards of Care in Diabetes—2026." Diabetes Care, 2026;49(Suppl 1) pmc.ncbi.nlm.nih.gov/articles/PMC12690181/
American Diabetes Association Professional Practice Committee. "Standards of Care in Diabetes—2026" (Sections 2, 10, 11, 12). Diabetes Care, 2026 diabetesjournals.org/care/issue/49/Supplement_1
Riddle MC, et al. "Consensus Report: Definition and Interpretation of Remission in Type 2 Diabetes." Diabetes Care, 2021;44(10):2438–2444 doi.org/10.2337/dci21-0034
Lean MEJ, et al. "Primary care-led weight management for remission of type 2 diabetes (DiRECT): an open-label, cluster-randomised trial." The Lancet, 2018;391(10120):541–551 pubmed.ncbi.nlm.nih.gov/29221645/
Centers for Disease Control and Prevention. "National Diabetes Statistics Report." CDC, updated 2026 cdc.gov/diabetes/php/data-research/index.html
U.S. Food and Drug Administration. "Mounjaro (tirzepatide) Prescribing Information." FDA, 2026 accessdata.fda.gov/drugsatfda_docs/label/2026/215866s044s045lbl.pdf
U.S. Food and Drug Administration. "Ozempic (semaglutide) Prescribing Information." FDA, 2026 accessdata.fda.gov/drugsatfda_docs/label/2026/209637s038lbl.pdf
Texas Department of State Health Services, Texas Diabetes Council. "Texas Diabetes Council Assessment of State Agency Programs for the Prevention and Treatment of Diabetes" (2023 data). DSHS, November 2025 dshs.texas.gov/sites/default/files/legislative/2025-Reports/2025-texas-diabetes-council-assessment-report.pdf
American College of Obstetricians and Gynecologists. "Pregestational Diabetes Mellitus" (Practice Bulletin No. 201, reaffirmed 2025). ACOG acog.org/clinical/guidance/practice-bulletin/2018/12/pregestational-diabetes-mellitus
This article is for educational purposes only and does not replace individualized medical advice, diagnosis, or treatment. Consult a qualified physician before starting, stopping, or changing diabetes medications or glucose targets, especially during pregnancy or when planning pregnancy. High blood sugar with vomiting, confusion, unusual drowsiness, trouble breathing, fruity-smelling breath, or severe weakness may signal an emergency; call 911 or go to the nearest emergency room.
About the Author
Board-Certified Family Medicine Physician (ABFM)
Dr. Casey Dean is a board-certified family medicine physician (ABFM) who manages type 2 diabetes, high blood pressure, and high cholesterol for patients across Texas through primary care and telehealth.
Credentials & Memberships:
- Doctor of Osteopathic Medicine (DO) — University of North Texas Health Science Center
- Family Medicine Residency — Waco Family Medicine (Nationally Ranked)
- Board Certified — American Board of Family Medicine (ABFM)
- Texas Medical Board License: #T3065
- Clinical interests: Primary Care, Chronic Disease Management, Metabolic Health
Medical Review Date: November 2026, by Dr. Kathryn Kline, MD, Texas Medical Board License T3117
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